Formation of high crystalline LDH sludge for removing Cu and Zn from wastewater by controlled double-jet precipitation

Lanyan, Wu; Peng, Bing; Li, Qingzhu; Wang, Qingwei; Xu, Yan; Lin, Qiuhong; Ji, Chunlei

doi:10.1007/s11356-019-05161-7

Cited by 16 publications

(7 citation statements)

References 46 publications

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“…On the contrary, crystallites interact less favorably when stacking cationic layers and interlayers one over the other, thus resulting in lower heights than widths. This view of the relation between the plate-like morphology and the inner structure of LDH has already allowed a better understanding of the morphology of LDH based structures in other works (Li et al, 2018;Prestopino et al, 2019;Wu et al, 2019;Aleshin et al, 2020;Roberts et al, 2020).…”

Section: Density Functional Theory With Periodic Modelsmentioning

confidence: 87%

Layered double hydroxides for corrosion-related applications—Main developments from 20 years of research at CICECO

et al. 2022

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This work describes the main advances carried out in the field of corrosion protection using layered double hydroxides (LDH), both as additive/pigment-based systems in organic coatings and as conversion films/pre-treatments. In the context of the research topic “Celebrating 20 years of CICECO”, the main works reported herein are based on SECOP’s group (CICECO) main advances over the years. More specifically, this review describes structure and properties of LDH, delving into the corrosion field with description of pioneering works, use of LDH as additives to organic coatings, conversion layers, application in reinforced concrete and corrosion detection, and environmental impact of these materials. Moreover, the use of computational tools for the design of LDH materials and understanding of ion-exchange reactions is also presented. The review ends with a critical analysis of the field and future perspectives on the use of LDH for corrosion protection. From the work carried out LDH seem very tenable, versatile, and advantageous for corrosion protection applications, although several obstacles will have to be overcome before their use become commonplace.

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Section: Density Functional Theory With Periodic Modelsmentioning

confidence: 87%

Layered double hydroxides for corrosion-related applications—Main developments from 20 years of research at CICECO

et al. 2022

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“…CuZnAl-LDH with the Cu 2+ /Cu 2+ + Zn 2+ molar ratio of 0.5 was prepared using the constant pH co-precipitation method under room temperature and ambient pressure. 22,23 In a typical synthesis, appropriate amounts of Al(NO 3 ) 3 •9H 2 O, Cu(NO 3 ) 2 •3H 2 O, and Zn(NO 3 ) 2 •6H 2 O solution (A) and NaOH solution (B) were first prepared. Then, solutions A (120 mL) and B were simultaneously added into 40 mL of deionized water at the rate of 0.5 mL min −1 and stirred at 500 rpm.…”

Section: Synthesis Of Cuznal-ldh Materialsmentioning

confidence: 99%

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts

Peng

et al. 2022

CrystEngComm

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“…Las propiedades específicas de los LDH, como la porosidad y el área superficial, se pueden controlar variando el método y las condiciones de síntesis, lo que da lugar a una amplia gama de materiales adaptados a las aplicaciones específicas mencionadas en el párrafo anterior. La estructura de los LDH, también se puede modificar cambiando la combinación de los cationes y los aniones de las capas intermedias para conferirles propiedades específicas (Chaillot et al, 2020;Zheng et al, 2019;Wu et al, 2019).…”

Section: Figura 1 Esquema Estructural De Los Materiales Tipo Hidrotal...unclassified

ELUCIDACIÓN DE LA FÓRMULA ESTEQUIOMÉTRICA DE NANOHIDROTALCITAS DE Mg Y Ni SINTETIZADAS POR EL MÉTODO DE COPRECIPITACIÓN

Rodrı́guez

Fernández

Domínguez³

et al. 2021

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Los hidróxidos dobles laminares (LDH, por sus siglas en inglés), también denominados como Hidrotalcitas (HTs), son una clase de materiales arcillosos bidimensionales conocidos por su estructura laminar única, composición versátil y propiedades de intercambio iónico. En este trabajo se reporta la determinación de la relación estequiométrica de arcillas tipo HTs sintetizadas en el laboratorio por el método de co-precipitación. El contenido de metales di y tri-valente que conforman las estructuras de las arcillas fue cuantificado por espectroscopia de absorción atómica por llama. Se sintetizaron dos tipos de HTs, Ni (HT-Ni) y Mg (HT-Mg); donde de acuerdo con los cálculos realizados la formula estequiométrica para la primera arcilla es Ni0,82Al0,18(OH)2(NO3)0,18 y Mg0,80Al0,20(OH)2(NO3)0,20 para la segunda, resultados que concuerdan perfectamente con la literatura. Las arcillas sintetizadas fueron caracterizadas por difracción de rayos X, espectroscopia FT-IR y microscopia electrónica de barrido. Los patrones de difracción de rayos X confirmaron la formación de HTs de tamaño de partícula nanométrico, donde la HT-Mg sintetizada posee mejores propiedades cristalinas.

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Formation of high crystalline LDH sludge for removing Cu and Zn from wastewater by controlled double-jet precipitation

Cited by 16 publications

References 46 publications

Layered double hydroxides for corrosion-related applications—Main developments from 20 years of research at CICECO

Layered double hydroxides for corrosion-related applications—Main developments from 20 years of research at CICECO

Photodegradation of naproxen using CuZnAl-layered double hydroxides as photocatalysts

ELUCIDACIÓN DE LA FÓRMULA ESTEQUIOMÉTRICA DE NANOHIDROTALCITAS DE Mg Y Ni SINTETIZADAS POR EL MÉTODO DE COPRECIPITACIÓN

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